[Hypophyseal-thyroid system in the dynamics of complicated and uncomplicated myocardial infarct].

The state of the hypophysis-thyroid system was studied by determining the blood content of thyreotropic hormone, thyroxine, triiodothyronine and assessing the iodine-cumulating function of the thyroid gland 24--48 hours after the beginning of the myocardial infarction and return of the S--T interval to the electrical isoline. It is established that the state of this system in myocardial infarction depends on the type of its development. In uncomplicated myocardial infarction the hyperfunctional regime of activity of the hypophysis-thyroid system occurs, in the complicated form there is hypofunction with traits of the primary hypothyrosis and resistance of the thyroid to thyreotropic hormone. The state of the hypophysis-thyroid system is the initial stereotype of its function.